Applies To
	Product(s):	STAAD.Pro
	Version(s):	20.07.11.82
	Environment:	All
	Area:	Steel Design
	Subarea:	N/A
	Issue #:	532775

Problem

Torsion check as per AISC 360-10 or AISC 360-05 causes STAAD.Pro to crash when such check is carried out for combinations that include

1. dynamic cases as part of it

2. other load combination/s as part of it

Reason

The torsion design can process load combinations created from primary load cases only. In case when load is dynamic or a combination load itself, the program will not process it.

Workaround

Use the LOAD LIST command to ensure that torsion checks are only carried out for cases without the conditions mentioned above.

In case a load combination itself has been included as part of a combination for which torsion check is required, replace the load combination with the corresponding primary load cases within the load combination for which torsion needs to be checked

Solution

Will be addressed in STAAD.Pro SS6 SP4 expected to be released in April/May of 2017.